Comparing and Scaling 0809

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Comparing and Scaling
Big Idea
Many important practical and mathematical applications involve comparing quantities of one kind or another; it is important to know which method to use and how we should use them.
Investigation 1: Making Comparisons
Essential Question: What methods are there for comparing things?1.1 Writing Ads - Lena
1.2 Targeting an Audience - Eva
1.3 Getting the Message Across - Rigsby
Mathematical Reflections, p. 15 - DanishInvestigation 2: Comparing by Finding Percents
Essential Question:
What methods are there for comparing things?2.1 Comparing Leisure Activities - Arfan
2.2 Comparing Your Class to the Nation - Pratik
Mathematical Reflections, p. 25 - Jae
Investigation 3: Comparing by Using Ratios
Essential Question:
What methods are there for comparing things?3.1 Mixing Juice - Md Aiman
3.2 Helping the Cook -
Sudhir
3.3 Sharing Pizza -Adit
Mathematical Reflections, p. 36 -Lamisa
Investigation 4: Comparing by Finding Rates
Essential Question:
What methods are there for comparing things?4.1 Comparing Fuel Economy -Hunter
4.2 Using Unit Rate -Nitika
4.3 Solving Problems with Rates -Jason
4.4 Buying Beads -Matthew
Mathematical Reflections, p. 51 -Ned
Investigation 5: Estimating Populations & Densities
Essential Question:
What methods are there for comparing things?5.1 Estimating the Size of a Crowd -Warsame
5.2 Estimating a Deer Population -
5.3 Finding Population Densities -
5.4 Comparing the Dakotas -
5.5 Predicting Traffic Jams -
Mathematical Reflections, p. 64 -
Investigation 6: Choosing Strategies
Essential Question:
What methods are there for comparing things?6.1 Scaling Up or Down -
6.2 Using Rules of Thumb -
6.3 Selecting Delegates -
Mathematical Reflections, p. 81 -



Comparing and Scaling Vocabulary



Decimal
Difference
Equation
Equivalent ratio
Fraction
Percent
Population Density
Proportion
Rate
Ratio
Scale
Scaling
Scale Factor
Unit Rate

[[file/view/Comparing Scaling Vocab definitions Teacher.pdf|Comparing Scaling Vocab definitions Teacher.pdf]]
[[file/view/Comparing Scaling Vocab definitions Student.pdf|Comparing Scaling Vocab definitions Student.pdf]]